听下面一段独白，回答第1-4小题。 1. How did Europeans know the exact time in the late 1700s? A. By looking at clocks at home. B. By looking at clocks in factories. C. By looking at clocks in public places. 2. When did people regard watches as a sign of wealth in Europe and the US? A. In the 1800s. B. In the 1850s. C. In the 1900s. 3. What did  industrialization bring about in watch-making? A. The quality of watches was improved. B. More types of watches are avalible. C. more watches could be produced. 4. Which would be the best title for the passage? A. The development of watches and clocks. B. The functions of watches and clocks. C. The importance of watches and clocks.